The used 504X Fluid Video Head with Flat Base from Manfrotto features an open bridge design that provides a stable, smooth performance while reducing weight.
The head’s patented bridge technology allows for a wider top surface and longer sliding plate that add stability and balance. The head features a flat base with a 3/8"-16 female mounting thread that allows compatibility with a wide range of tripods, monopods, sliders, jibs, and dollies, and a variety of rigs.